lleiro Posted September 23, 2012 Share Posted September 23, 2012 Upon a friends suggestion I switched to Premium Gas a couple of tanks ago and I measured my gas mileage; I did 228 miles with 8.9 gls of which 170 mi were highway cruising at an average of 75mph and the rest in the city. That gives 25.6 MPG which I think is is pretty decent. Year 2000 and 179k on the clock... Link to comment Share on other sites More sharing options...
octain11 Posted September 23, 2012 Share Posted September 23, 2012 i have tried premium, doesnt really make a difference imo. Its not about the octane you use, it is how you drive the car Link to comment Share on other sites More sharing options...
BrandonJ 2001 GT Limited Posted September 24, 2012 Share Posted September 24, 2012 I do prem in mine and I average 18mpg Best since I've owned her was about 25 and the worst was 14. Gas type didn't matter. Link to comment Share on other sites More sharing options...
BeKnwn Posted September 24, 2012 Share Posted September 24, 2012 I was getting about 18~20 then I swapped the whole suspension and now I'm getting about 23 or 24 daily and 30 highway probably cause my driving style changed after the suspension upgrade lol but I got a lot more comming and expecting little more Link to comment Share on other sites More sharing options...
DeleriousZ Posted September 24, 2012 Share Posted September 24, 2012 I just got 12.5L/100km on my last fill... That's with a stg2 ej257 swap tho lol. Link to comment Share on other sites More sharing options...
octain11 Posted September 24, 2012 Share Posted September 24, 2012 I just got 12.5L/100km on my last fill... That's with a stg2 ej257 swap tho lol. english please Link to comment Share on other sites More sharing options...
Giffle Posted September 25, 2012 Share Posted September 25, 2012 i have tried premium, doesnt really make a difference imo. Same story for me and tried it on a much longer distance with four tanks filled with premium gas. No change, it was a waste of money, but at least I know it for sure Its not about the octane you use, it is how you drive the car Damn right Link to comment Share on other sites More sharing options...
Giffle Posted September 25, 2012 Share Posted September 25, 2012 english please To "translate" L/100km into mpg (USG of course) Divide 236.45 by # L/100 km and you get mpg So 236.45/12.5= 18.9 mpg Bingo, on l'a Link to comment Share on other sites More sharing options...
Giffle Posted September 25, 2012 Share Posted September 25, 2012 I was getting about 18~20 then I swapped the whole suspension and now I'm getting about 23 or 24 daily and 30 highway probably cause my driving style changed after the suspension upgrade lol but I got a lot more comming and expecting little more Yes, if your car is lower, you can expect it. Less drag under the car, better aerodynamic. Link to comment Share on other sites More sharing options...
BeKnwn Posted September 25, 2012 Share Posted September 25, 2012 (edited) ^ Yeah there is a lot of factors that you gain but I was talking about sway bars and bushings the works not just springs anyways. on the octane I think the only time you ever switch is when you do a frankenmotor for the high conpression build other then that, its all about trying to make the engine happy and knock free, to less will cause knock and to much will cause it, its just trying to find that midium but its hard to do unlees you have maps or some sort of knock telling device. Its kinda explained here a little migt apply a little to us cause its more 2005+ but its still almost a 2.5 motor http://legacygt.com/forums/showthread.php/octanei-191569p2.html Edited September 25, 2012 by BeKnwn Link to comment Share on other sites More sharing options...
rougeben83 Posted September 29, 2012 Share Posted September 29, 2012 15-26mpg on 93 octane heavy city/all highway. 17-18mpg mixed. All on 93 octane tune; not the original motor though Link to comment Share on other sites More sharing options...
octain11 Posted September 29, 2012 Share Posted September 29, 2012 he got wrx motor not fair^^ lol Link to comment Share on other sites More sharing options...
GTborn01 Posted September 30, 2012 Share Posted September 30, 2012 I get 22 city. Around 25 highway but will know for sure when I make a 1200 mile trip to montana and back at the end of the month. Link to comment Share on other sites More sharing options...
HuskiesGo Posted September 30, 2012 Share Posted September 30, 2012 I average a very persistent 30mpg on 87 octain. Car is totaly stock with 160,000 miles on it. Link to comment Share on other sites More sharing options...
BrandonJ 2001 GT Limited Posted October 1, 2012 Share Posted October 1, 2012 You must not rev over 2500 I think I got decent mileage over the weekend on a trip out of town. Roughly 125 miles on a 1/4 tank. Will see what it comes out to when I fill up. Normally I get about 50-60 miles on a 1/4 when driving in town. Link to comment Share on other sites More sharing options...
vicdeng Posted October 1, 2012 Share Posted October 1, 2012 I have been keeping track of every tank i fill up, i am getting average 27.3 MPG. I am pretty satisfied with it. For people who hasn't clean their fuel system, it's probably a good idea to do so, i do it every time i change my oil. And i use Chevron techron concentrate fuel system cleaner. I notice a difference once a while. Link to comment Share on other sites More sharing options...
Scoobyleg Posted October 2, 2012 Share Posted October 2, 2012 I get about 15 mpg. I have a 03 with 47k. All street driving tho Link to comment Share on other sites More sharing options...
octain11 Posted October 2, 2012 Share Posted October 2, 2012 thats pretty awful dude Link to comment Share on other sites More sharing options...
tonybuttons Posted October 2, 2012 Share Posted October 2, 2012 I get an average of 19-20. 24-25 on long trips. I hate it a little bit, coming from a sippy Civic. Link to comment Share on other sites More sharing options...
tonybuttons Posted October 2, 2012 Share Posted October 2, 2012 Whoops I'm in the wrong gen. Still, I was just looking at mpg threads. Link to comment Share on other sites More sharing options...
octain11 Posted October 3, 2012 Share Posted October 3, 2012 4th and 3rd NA get about the same mpg Link to comment Share on other sites More sharing options...
sub4ru Posted October 3, 2012 Share Posted October 3, 2012 I get 15 mpg with premium, though have a single turbo and a tune. Link to comment Share on other sites More sharing options...
octain11 Posted October 3, 2012 Share Posted October 3, 2012 you swapped from twin to single?? Link to comment Share on other sites More sharing options...
BeKnwn Posted October 3, 2012 Share Posted October 3, 2012 I just got done with a full head rebuild with new valve springs and 1000 delta's plus spacers and gaskets. I still gotta do motor mounts/dog bone, tranny cross member an rear diff bushings but I'm doing another recording on what new mpg ill be getting Link to comment Share on other sites More sharing options...
LegaWaga Posted October 4, 2012 Share Posted October 4, 2012 I'm also getting around 20, which is low for me. A tune up, oil change, clutch and coilovers should bring some of that back though. Link to comment Share on other sites More sharing options...
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